PBS NewsHour full episode Aug. 13, 2019

Tuesday on the NewsHour, a deadly explosion at a Russian nuclear missile testing facility is shrouded in secrecy — and reflects the growing U.S.-Russia arms race. Plus: Allegations of sexual misconduct against opera star Placido Domingo, phone gambling apps targeting vulnerable users, a Vote 2020 interview with New York City Mayor Bill de Blasio and the shocking robbery of black-owned farmland.